- All patients will be required to also take at least one other mood-stabilizing agent, defined as a standard agent (lithium, valproate, carbamazepine) or a novel anticonvulsant agent (oxcarbazepine, gabapentin, topiramate). If patients are not taking any of these agents on study initiation, they will be required to start one of these agents at study initiation. Study inclusion criteria must be met after at least 2 weeks of treatment with one of these mood-stabilizing agents.